一、问题的提出用大小相等,方向相反的两个压力同时作用在水平放置的一个圆柱体上时,压力将通过直径,且在其垂直平面上产生均匀分布的张拉应力的理论,在四十年代被确立后,五十年代人们把它应用到混凝土抗拉强度试验方法中。1963年建筑科学研究院建筑材料研究室编著的“混凝土集料与混凝土试验方法”一韦将该法正式应用到我国的混凝土试验中来。我们在生产实践中体会到:该法操 First, the problem is posed by the use of two pressures of the same size and opposite directions acting simultaneously on a cylindrical body placed horizontally. The pressure will pass through the diameter and produce a uniform distribution of tensile stress in its vertical plane. After the decade was established, people applied it to the concrete tensile strength test method in the 1950s. The “Test Method for Concrete Aggregate and Concrete” edited by the Building Materials Research Institute of the Building Science Research Institute in 1963 was applied to the concrete test in China. We realized in production practice: